161 lines
3.9 KiB
C++
161 lines
3.9 KiB
C++
/* ---------------------------------------------------------------------------
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Nullsoft Database Engine
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--------------------
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codename: Near Death Experience
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--------------------------------------------------------------------------- */
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/* ---------------------------------------------------------------------------
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ColumnField Class
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Mac OS X implementation
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Field data layout:
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[1 byte] Field Type
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[1 byte] Unused (maybe convert to 'searchable')
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[1 byte] Name Length
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[Name Length bytes] Name (UTF-8)
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--------------------------------------------------------------------------- */
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#include "../nde.h"
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//---------------------------------------------------------------------------
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ColumnField::ColumnField(unsigned char FieldID, CFStringRef FieldName, unsigned char FieldType, Table *parentTable)
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{
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InitField();
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Type = FIELD_COLUMN;
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MyType = FieldType;
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Name = (CFStringRef)CFRetain(FieldName);
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ID = FieldID;
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}
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//---------------------------------------------------------------------------
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void ColumnField::InitField(void)
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{
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searchable = false;
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MyType = FIELD_UNKNOWN;
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Type = FIELD_COLUMN;
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Name = NULL;
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ID = 0;
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}
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//---------------------------------------------------------------------------
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ColumnField::ColumnField()
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{
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InitField();
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}
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//---------------------------------------------------------------------------
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ColumnField::~ColumnField()
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{
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if (Name)
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CFRelease(Name);
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}
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void ColumnField::SetSearchable(bool val)
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{
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searchable=val;
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}
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bool ColumnField::IsSearchableField() const
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{
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return searchable;
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}
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//---------------------------------------------------------------------------
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void ColumnField::ReadTypedData(const uint8_t *data, size_t len)
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{
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unsigned char c;
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int pos=0;
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CHECK_CHAR(len);
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MyType = GET_CHAR(); pos++;
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CHECK_CHAR(len);
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pos++;
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CHECK_CHAR(len);
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c = GET_CHAR(); pos++;
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if (c)
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{
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CHECK_BIN(len, c);
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if (Name)
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CFRelease(Name);
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Name = CFStringCreateWithBytes(kCFAllocatorDefault, data+pos, c, kCFStringEncodingUTF8, false);
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}
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}
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//---------------------------------------------------------------------------
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void ColumnField::WriteTypedData(uint8_t *data, size_t len)
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{
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int pos = 0;
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CHECK_CHAR(len);
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PUT_CHAR(MyType); pos++;
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CHECK_CHAR(len);
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PUT_CHAR(0/*(char)indexUnique*/);
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pos++;
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if (Name)
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{
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CFIndex lengthRequired=0;
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CFStringGetBytes(Name, CFRangeMake(0, CFStringGetLength(Name)), kCFStringEncodingUTF8, 0, false, NULL, 0, &lengthRequired);
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CHECK_BIN(len, lengthRequired+1);
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PUT_CHAR(lengthRequired); pos++;
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CFStringGetBytes(Name, CFRangeMake(0, CFStringGetLength(Name)), kCFStringEncodingUTF8, 0, false, data+pos, lengthRequired, 0);
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}
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else
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{
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PUT_CHAR(0);
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}
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}
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//---------------------------------------------------------------------------
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unsigned char ColumnField::GetDataType(void)
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{
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return MyType;
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}
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//---------------------------------------------------------------------------
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void ColumnField::SetDataType(unsigned char type)
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{
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if ((MyType == FIELD_INTEGER || MyType == FIELD_BOOLEAN || MyType == FIELD_DATETIME || MyType == FIELD_LENGTH) &&
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(type == FIELD_INTEGER || type == FIELD_BOOLEAN || type == FIELD_DATETIME || type == FIELD_LENGTH)) {
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MyType = type;
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}
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// going from string to filename or filename to string is OK
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if ((MyType == FIELD_FILENAME && type == FIELD_STRING)
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|| (MyType == FIELD_STRING && type == FIELD_FILENAME))
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{
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MyType = type;
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}
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}
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//---------------------------------------------------------------------------
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CFStringRef ColumnField::GetFieldName(void)
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{
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return Name;
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}
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//---------------------------------------------------------------------------
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size_t ColumnField::GetDataSize(void)
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{
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if (Name)
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{
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CFIndex lengthRequired=0;
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CFStringGetBytes(Name, CFRangeMake(0, CFStringGetLength(Name)), kCFStringEncodingUTF8, 0, false, NULL, 0, &lengthRequired);
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return lengthRequired+3;
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}
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else
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return 3;
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}
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//---------------------------------------------------------------------------
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int ColumnField::Compare(Field * /*Entry*/)
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{
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return 0;
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}
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